3121423403121 has 12 divisors (see below), whose sum is σ = 4582636180980. Its totient is φ = 2046835018080.

The previous prime is 3121423403101. The next prime is 3121423403129. The reversal of 3121423403121 is 1213043241213.

3121423403121 is a `hidden beast` number, since 3 + 1 + 2 + 1 + 4 + 2 + 340 + 312 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1743825891600 + 1377597511521 = 1320540^2 + 1173711^2 .

It is not a de Polignac number, because 3121423403121 - 2³⁹ = 2571667589233 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3121423403129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2842825866 + ... + 2842826963.

It is an arithmetic number, because the mean of its divisors is an integer number (381886348415).

Almost surely, 2^{3121423403121} is an apocalyptic number.

It is an amenable number.

3121423403121 is a deficient number, since it is larger than the sum of its proper divisors (1461212777859).

3121423403121 is a wasteful number, since it uses less digits than its factorization.

3121423403121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5685652896 (or 5685652893 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 3121423403121 its reverse (1213043241213), we get a palindrome (4334466644334).

The spelling of 3121423403121 in words is "three trillion, one hundred twenty-one billion, four hundred twenty-three million, four hundred three thousand, one hundred twenty-one".